Hello,
About licences and editions, the following link can clarify :
What editions of SAP HANA exist?
About XS, please take a read on this :
Introducing...SAP HANA Extended Application Services (XS)
SAP HANA Extended Application Services
You should have XS available. Just check if it suits what you need.
I hope it helps.
Kind Regards,
Artur Moreira